JPH0225165B2 - - Google Patents
Info
- Publication number
- JPH0225165B2 JPH0225165B2 JP14479384A JP14479384A JPH0225165B2 JP H0225165 B2 JPH0225165 B2 JP H0225165B2 JP 14479384 A JP14479384 A JP 14479384A JP 14479384 A JP14479384 A JP 14479384A JP H0225165 B2 JPH0225165 B2 JP H0225165B2
- Authority
- JP
- Japan
- Prior art keywords
- lens
- chamfered
- width
- eyeglass
- optical axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 230000003287 optical effect Effects 0.000 claims description 14
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 239000002537 cosmetic Substances 0.000 description 3
- 238000004381 surface treatment Methods 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 230000004438 eyesight Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009500 colour coating Methods 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lens Barrels (AREA)
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は眼鏡枠への枠入れの為、縁摺りを施し
た眼鏡レンズに関与し、特に凹面側（眼側）の周
辺部に面取り部分を設けた負の屈折力を有する眼
鏡レンズに関する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an eyeglass lens with a rim for fitting into an eyeglass frame. The present invention relates to a spectacle lens having a negative refractive power.
〈従来技術〉
眼鏡レンズは眼鏡枠への枠入れの為、縁摺りを
施され、その周辺に薬研部が構成される。強度の
負の屈折力を有する眼鏡レンズにあつては、この
周辺の厚みが大きい為、重量もかさみ、さらには
外見上の美容効果も悪くなる傾向がある。<Prior art> In order to fit the lens into the frame of the eyeglass, a rim is applied to the lens, and a drug lab is formed around the rim. Spectacle lenses with strong negative refractive power tend to have a large thickness around this area, which increases the weight and also tends to have poor cosmetic effects.
このため、特に強度の負の屈折力を有する眼鏡
レンズにあつては、ツボクリと一般に称される特
殊加工を該レンズの凹面側に加えることがある。 For this reason, especially in the case of eyeglass lenses having a strong negative refractive power, a special process commonly called acupointing is sometimes applied to the concave side of the lens.
しかしながらこの加工によつて該レンズの有効
視野は著しく損なわれ、その有効視野の形状も眼
鏡枠の形状とは無関係な円形形状となつてしまう
ため、装用者に対し視野の狭窄感を引き起す結果
となり、良好な装用感が望めない。 However, due to this processing, the effective field of view of the lens is significantly impaired, and the shape of the effective field of view becomes circular, which is unrelated to the shape of the eyeglass frame, resulting in a feeling of constriction of the visual field for the wearer. Therefore, a good wearing feeling cannot be expected.
この加工の他の欠点のうち、有効視野の境界に
明瞭な境界線が生ずることに関しては、その改良
方法として実公昭57−9777号、および特開昭58−
195826号が提案されているが、有効視野の形状自
体については何ら改良されていない。又、レンズ
周辺部を切削し、該切削面を艷出し研磨する技術
として実開昭58−144322号が提案されているが、
目的と効果が不明確である。更に特開昭55−
41474には玉摺り後の眼鏡レンズの裏面外周部よ
り５mm以内を全周にわたつて切削研磨する技術が
述べられているが、薬研部を含めた切削形状が全
周にわたつて一定であるため、本来殆んど切削す
る必要の無い部分や有効視野を損ないたく無い部
分まで切削してしまう結果となる。 Among other drawbacks of this process, a clear boundary line is formed at the boundary of the effective field of view.
No. 195826 has been proposed, but there is no improvement in the shape of the effective field of view itself. Furthermore, Japanese Utility Model Application No. 144322/1983 has been proposed as a technique for cutting the peripheral part of the lens and polishing the cut surface.
Purpose and effect are unclear. Furthermore, JP-A-1987-
41474 describes a technique for cutting and polishing the entire circumference within 5 mm from the outer periphery of the back surface of an eyeglass lens after beading, but since the cutting shape including the glazing part is constant over the entire circumference, This results in the cutting of parts that hardly need to be cut or parts that do not want to damage the effective field of view.
〈発明の目的〉
本発明は、このような従来技術の欠点に鑑み、
眼鏡枠への枠入れの為、縁摺りを施した眼鏡レン
ズの周辺部に有効視野を適正に保つ特定の形状の
面取り部分を設け、視野の狭窄感を引き起すこと
なく周辺部の厚みとレンズ全体の重量を減ずると
同時に、不要の外光の侵入をおさえ、外見上の美
容効果を高め、更に該面取り部分に染色や表面処
理を施すことの相乗効果により、優れた装用感を
備えた眼鏡レンズを提供することを目的とする。<Object of the invention> In view of the drawbacks of the prior art, the present invention
In order to fit the frame into the eyeglass frame, a chamfered part with a specific shape is provided on the periphery of the edged eyeglass lens to properly maintain the effective field of view. Glasses that reduce the overall weight, suppress the intrusion of unnecessary external light, enhance the cosmetic effect on the appearance, and have an excellent wearing comfort due to the synergistic effect of dyeing and surface treatment on the chamfered parts. The purpose is to provide lenses.
本発明におけるレンズの周辺部とは眼鏡枠への
枠入れの為、縁摺りを施した眼鏡レンズの外周に
おける薬研部分とレンズ部分との境界部分を意味
し、本発明は該周辺部のうち特に凹面側（眼側）
の周辺部に艷出し研磨仕上げを施した特定の形状
の面取り部分を設けてあることを特徴とする。 In the present invention, the peripheral part of the lens means the boundary part between the lens part and the lens part on the outer periphery of the eyeglass lens which has been edged for fitting into the eyeglass frame. Concave side (eye side)
It is characterized by having a chamfered part of a specific shape with a polished finish applied to the periphery.
本発明における面取り部分の形状は、該眼鏡レ
ンズの光軸（多焦点レンズにあつては遠用部の光
軸）を含む平面による該面取り部分の断面曲線を
「面取り断面曲線」と呼ぶとき、該面取り断面曲
線の平均的な曲率半径は30mm以下であり、該面取
り断面曲線の両端点を通る直線と該光軸との為す
角度は45゜以下であり、更に該光軸と直交する方
向に測つた該面取り部分の幅は、全周にわたつて
均一ではなく、なだらかに変化しており、最小幅
は1.5mm以下であり、かつ最大幅は6.0mm以上であ
り、幅の広さは該光軸から外周に至る距離に対応
している。 The shape of the chamfered portion in the present invention is such that when a cross-sectional curve of the chamfered portion by a plane including the optical axis of the eyeglass lens (optical axis of the distance portion in the case of a multifocal lens) is referred to as a "chamfered cross-sectional curve", The average radius of curvature of the chamfered cross-sectional curve is 30 mm or less, the angle between the optical axis and a straight line passing through both end points of the chamfered cross-sectional curve is less than 45°, and the angle formed in the direction orthogonal to the optical axis is less than 45°. The measured width of the chamfered part is not uniform over the entire circumference, but changes gently.The minimum width is 1.5 mm or less, and the maximum width is 6.0 mm or more. It corresponds to the distance from the optical axis to the outer periphery.
〈実施例〉
本発明を以下に実施例の形で添付図と共に詳細
に説明する。<Example> The present invention will be described in detail below in the form of an example with reference to the accompanying drawings.
第１図は眼鏡枠への枠入れの為、縁摺りを施し
た本発明の実施例から成る眼鏡レンズの上半分の
断面図を示し、１はレンズ全体、２は凹面（眼側
屈折面）、３は凸面（対物側屈折面）、４は薬研部
分、５は面取り部分、６は面取り断面曲線、OC
はレンズの光学中心、OAはOCを通るレンズの
光軸、Ｗ及びＬはOAと直交する方向に測つた面
取り部分の幅及びOAから外周に至る距離、Ｃは
面取り断面曲線の両端点を通る直線を表す。 FIG. 1 shows a cross-sectional view of the upper half of a spectacle lens made of an embodiment of the present invention with a border for fitting into a spectacle frame, where 1 is the entire lens, and 2 is a concave surface (eye-side refractive surface). , 3 is the convex surface (objective side refractive surface), 4 is the Yagen part, 5 is the chamfered part, 6 is the chamfered cross-sectional curve, OC
is the optical center of the lens, OA is the optical axis of the lens passing through OC, W and L are the width of the chamfered part measured in the direction perpendicular to OA and the distance from OA to the outer periphery, and C passes through both end points of the chamfered cross-sectional curve. Represents a straight line.
本実施例に於ける面取り部分は艷出し研磨仕上
げが施されているため、光が乱反射して装用者が
まぶしく感ずることもなく、又、白く縁どられて
目立つこともない。 Since the chamfered portion in this embodiment has a polished finish, the wearer will not feel glare due to diffuse reflection of light, and the chamfered portion will not be surrounded by white and stand out.
更にＣとOAとの為す角度Ａは45゜以下となつて
いる為、凸面側から入射し面取り部分により反射
した光が凸面に向かうことは少なく、その結果、
面取り部分は外見的に目立ちにくくなつており、
又、凸面から再度反射した光が眼に入射すること
の影響も少なくなつている。更に面取り断面曲線
の平均的な曲率半径は30mm以下であり、極めて大
きな表面屈折力を有する。仮に本実施例のレンズ
素材がＮ（屈折率）＝1.499のプラスチツクであつ
たとすると、その表面屈折力Ｄ（単位；ジオプタ
ー）はＮ：屈折率、Ｒ：曲率半径（単位；mm）と
して
Ｄ＝1000＊（Ｎ−１）／Ｒ
なる公知の公式で表され、
Ｄ＞1000＊（1.499−１）／30＝＋16.63
からこの面取り部分は＋16.63ジオプター以上の
強い正の表面屈折力を有することが解る。同様に
Ｎ（屈折率）＝1.523の硝子であつたとすると＋
17.43ジオプター以上となり、いずれにせよレン
ズの有効視野の有する屈折力（負）とは極端に異
なるため、この面取り部分を透過した光は実質的
に視野の妨げとはならない。 Furthermore, since the angle A formed by C and OA is less than 45°, the light that enters from the convex side and is reflected by the chamfered portion is unlikely to go toward the convex surface, and as a result,
The chamfered part is less noticeable from the outside,
Furthermore, the influence of light reflected again from the convex surface and entering the eye is also reduced. Furthermore, the average radius of curvature of the chamfered cross-sectional curve is 30 mm or less, and it has an extremely large surface refractive power. Assuming that the lens material of this example is a plastic with N (refractive index) = 1.499, its surface refractive power D (unit: diopter) is expressed as follows: where N: refractive index, R: radius of curvature (unit: mm). It is expressed by the well-known formula 1000*(N-1)/R, and since D>1000*(1.499-1)/30=+16.63, this chamfered part has a strong positive surface refractive power of +16.63 diopters or more. I understand that I have it. Similarly, if it is glass with N (refractive index) = 1.523, +
This is 17.43 diopters or more, which is extremely different from the (negative) refractive power of the effective field of the lens, so the light that passes through this chamfered portion does not substantially impede the field of view.
又、この面取り部分から反射した光の焦点距離
Ｆ（単位；mm）はレンズ素材の屈折率とは無関係
にＲ：曲率半径（単位；mm）として
Ｆ＝Ｒ／２
なる公知の公式で表され、Ｆ＜30／２＝15からこ
の面取り部分は15mm以下の短い焦点距離を有する
ことが解る。 Also, the focal length F (unit: mm) of the light reflected from this chamfered portion is expressed by the well-known formula F=R/2, where R: radius of curvature (unit: mm), regardless of the refractive index of the lens material. , F<30/2=15, it can be seen that this chamfered portion has a short focal length of 15 mm or less.
これを前述の表面屈折力と同様にジオプターを
単位として表すと15mmの焦点距離は1000／15＝＋
66.67ジオプターという強い正の値に相当し、こ
の面取り部分から反射した光もまた実質的に視野
の妨げとはならない。 Expressing this in units of diopter as with the surface refractive power mentioned above, the focal length of 15 mm is 1000/15 = +
Corresponding to a strongly positive value of 66.67 diopters, the light reflected from this bevel also does not substantially impede vision.
もし、この面取り部分に染色、又は反射防止コ
ーテイングやカラーコーテイング等の表面処理を
施したならば、この面取り部分の透過光や反射光
は、更に減つたり目立ちにくくなつたりする為、
前述の効果との相乗効果により、更に快適な装用
感と優れた美容効果とを得ることができる。 If this chamfered part is dyed or subjected to surface treatment such as anti-reflection coating or color coating, the transmitted light and reflected light from this chamfered part will further decrease or become less noticeable.
Due to the synergistic effect with the above-mentioned effects, a more comfortable feeling of wearing and excellent beauty effects can be obtained.
第２図は第１図を凹面側より見た平面図であ
り、１はレンズ全体、４は薬研部分、５は面取り
部分（斜線部分）、OCはレンズの光学中心、
Wnax及びWnioは面取り部分の最大幅及び最小幅
を表している。 Fig. 2 is a plan view of Fig. 1 viewed from the concave side, where 1 is the entire lens, 4 is the drug part, 5 is the chamfered part (shaded part), OC is the optical center of the lens,
W nax and W nio represent the maximum width and minimum width of the chamfered portion.
第２図から容易に理解されるように、本実施例
に於ける面取り部分の幅は、全周にわたつて均一
ではなく、なだらかに変化しており、幅の広さＷ
は光軸から外周に至る距離Ｌ（第１図参照）に対
応している。ここでいう「対応している」とは、
長いＬに対しては広いＷ、短いＬに対しては狭い
Ｗが設定されていることを意味し、数学的に厳密
な意味での比例関係を規定するものではない。
又、この「長い」、「短い」、「広い」、「狭い」の解
釈も絶対的な定義はなく、個々のレンズの中での
相互の比較を表す用語にすぎない。 As can be easily understood from FIG.
corresponds to the distance L from the optical axis to the outer periphery (see FIG. 1). “Compatible with” here means
This means that a wide W is set for a long L, and a narrow W is set for a short L, and does not define a proportional relationship in a mathematically strict sense.
Furthermore, there are no absolute definitions for the interpretations of "long,""short,""wide," and "narrow," and they are merely terms that express mutual comparison within individual lenses.
このように厳密な比例関係を規定しない理由
は、単に眼鏡枠の形状が多種であり、OCの位置
も又装用者により異なるからばかりではなく、本
発明の効果が必ずしも厳密な比例関係を必要とし
ないことによる。 The reason for not stipulating a strict proportional relationship is not only that there are many different shapes of eyeglass frames and the position of the OC also differs depending on the wearer, but also that the effects of the present invention do not necessarily require a strict proportional relationship. By not doing it.
本実施例では耳側（第２図の左側）に位置する
面取り部分の幅は広く、最大幅（Wnax）は6.0mm
以上となつており、又、鼻側（第２図の右側）及
び下方に位置する面取り部分の幅は狭く、最小幅
（Wnio）は1.5mm以下となつている。 In this example, the width of the chamfered part located on the ear side (left side in Figure 2) is wide, and the maximum width (W nax ) is 6.0 mm.
In addition, the width of the chamfered portion located on the nose side (right side in Figure 2) and below is narrow, and the minimum width (W nio ) is 1.5 mm or less.
即ち、OCから遠い周辺部では有効視野より面
取り効果を優先し、OCに近い周辺部では面取り
の効果より有効視野の保全を優先させているので
ある。 That is, in the periphery far from the OC, priority is given to the chamfering effect over the effective field of view, and in the periphery close to the OC, preservation of the effective field of view is given priority over the chamfering effect.
このように本発明による眼鏡レンズは有効視野
が適正に保たれている為、装用者に対し視野の狭
窄感を引き起すことがなく、又、周辺部の厚みと
レンズ全体の重量を減ずると同時に不要の外光の
侵入を防ぐ配慮が為されており、外見上の美容効
果も高く、更には染色や表面処理を施すことの相
乗効果により、優れた装用感を備えた眼鏡レンズ
となつているのである。 In this way, the eyeglass lens according to the present invention maintains an appropriate effective field of view, so it does not cause the wearer to feel a narrowed field of vision, and at the same time reduces the thickness of the peripheral area and the weight of the entire lens. Care has been taken to prevent unnecessary external light from entering the lens, and it has a high cosmetic effect.Furthermore, the synergistic effects of dyeing and surface treatment make it an eyeglass lens that is comfortable to wear. It is.
第１図は本発明の一実施例である眼鏡レンズの
上半分の断面図。第２図は第１図の眼鏡レンズを
凹面側より見た平面図。
１……レンズ全体、２……凹面（眼側屈折面）、
３……凸面（対物側屈折面）、４……薬研部分、
５……面取り部分、６……面取り断面曲線、OC
……レンズの光学中心、OA……OCを通るレン
ズの光軸、Ｗ……OAと直交する方向に測つた面
取り部分の幅、Ｌ……OAと直交する方向に測つ
たOAから外周に至る距離、Ｃ……面取り断面曲
線の両端点を通る直線、Ａ……ＣとOAとの為す
角度、Wnax……面取り部分の最大幅、Wnio……
面取り部分の最小幅。
FIG. 1 is a sectional view of the upper half of a spectacle lens according to an embodiment of the present invention. FIG. 2 is a plan view of the spectacle lens shown in FIG. 1, viewed from the concave side. 1... Entire lens, 2... Concave surface (eye side refractive surface),
3... Convex surface (objective side refractive surface), 4... Yaken part,
5... Chamfered part, 6... Chamfered section curve, OC
...The optical center of the lens, OA...The optical axis of the lens passing through OC, W...The width of the chamfered part measured in the direction orthogonal to OA, L...From OA measured in the direction orthogonal to OA to the outer circumference Distance, C... Straight line passing through both end points of the chamfered section curve, A... Angle between C and OA, W nax ... Maximum width of the chamfered part, W nio ...
Minimum width of the chamfer.
Claims (1)
レンズの凹面側（眼側）の周辺部の形状の改良に
関与し、該眼鏡レンズは負の屈折力を有し、該眼
鏡レンズの凹面部分（眼側）と薬研部分との境界
には、全周にわたり艷出し研磨仕上げの面取り加
工が施されており、該眼鏡レンズの光軸（多焦点
レンズにあつては遠用部の光軸）を含む平面によ
る該面取り部分の断面曲線（以下「面取り断面曲
線」と呼ぶ。）の平均的な曲率半径は30mm以下で
あり、該面取り断面曲線の両端点を結ぶ直線と該
眼鏡レンズの光軸との為す角度は45゜以下であり、
更に該眼鏡レンズの光軸と直交する方向に測つた
該面取り部分の幅は、全周にわたつて均一ではな
く、なだらかに変化しており、最小幅は1.5mm以
下であり、かつ最大幅は6.0mm以上であり、幅の
広さは該眼鏡レンズの光軸から外周に至る距離に
対応しているような該面取り部分を備えているこ
とを特徴とする眼鏡レンズ。 ２ 特許請求の範囲１記載の眼鏡レンズに於い
て、前記面取り部分に染色、または反射防止コー
テイング、あるいはカラーコーテイングが施され
ていることを特徴とする眼鏡レンズ。[Scope of Claims] 1. Involves in improving the shape of the peripheral part of the concave side (eye side) of the eyeglass lens with a border for fitting into the eyeglass frame, and the eyeglass lens has a negative refractive power. The boundary between the concave surface part (on the eye side) and the lens part of the eyeglass lens is chamfered with a polished finish over the entire circumference. The average radius of curvature of the cross-sectional curve of the chamfered part (hereinafter referred to as the "chamfered cross-sectional curve") is 30 mm or less, and both end points of the chamfered cross-sectional curve are The angle between the connecting straight line and the optical axis of the eyeglass lens is 45° or less,
Furthermore, the width of the chamfered portion measured in the direction perpendicular to the optical axis of the eyeglass lens is not uniform over the entire circumference, but changes gently, the minimum width is 1.5 mm or less, and the maximum width is A spectacle lens comprising a chamfered portion having a width of 6.0 mm or more and whose width corresponds to the distance from the optical axis to the outer periphery of the spectacle lens. 2. The spectacle lens according to claim 1, wherein the chamfered portion is dyed, antireflection coated, or colored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479384A JPS6123106A (en) | 1984-07-12 | 1984-07-12 | Spectacle lens with considered effective visual field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14479384A JPS6123106A (en) | 1984-07-12 | 1984-07-12 | Spectacle lens with considered effective visual field |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6123106A JPS6123106A (en) | 1986-01-31 |
| JPH0225165B2 true JPH0225165B2 (en) | 1990-05-31 |
Family
ID=15370581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14479384A Granted JPS6123106A (en) | 1984-07-12 | 1984-07-12 | Spectacle lens with considered effective visual field |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6123106A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004010338B4 (en) * | 2004-03-03 | 2017-01-19 | Rodenstock Gmbh | Method for producing a spectacle lens |
| CN110262069B (en) * | 2019-05-22 | 2024-06-11 | 巫清福 | Manufacturing method of spectacle lens capable of reducing chamfering imaging interference |
-
1984
- 1984-07-12 JP JP14479384A patent/JPS6123106A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6123106A (en) | 1986-01-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |